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  1. #1
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    If I understand it correctly the
    Johnson Metysis controllers use basically the simpler Arcnet protocol
    In order to communicate with a true Bacnet device or
    a Lontalk device, or
    a Modbus device
    you still need a gateway device connected on the N2 bus
    Opennprotocol really does not exist
    If you are using a Modbus device on the N2 bus
    Can that device share global points with the Johnson controllers

  2. #2
    Join Date
    Oct 2003
    Location
    Michigan
    Posts
    727
    Not much of a Johnson guy but I just did a Bacnet project where I brought over 454 points of info from a N-30 bus.
    Pretty easy to accomplish and now I have full control of this building, setpoints and scheduling.
    There N-30 was on the LAN and the building is remote of the original job, all I needed was the N-30 Device ID and then scanned for it and bingo.

  3. #3
    Join Date
    Jul 2002
    Location
    NorthEast
    Posts
    811
    What kind of gateway did you use

  4. #4
    Join Date
    Oct 2003
    Location
    Michigan
    Posts
    727
    BCU

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